Declination-recorder for bore-holes.



E. NEUROTH.

DECLINATFON RECORDER FOR BORE HOLES. I

APPLICATION FILED DEC- 19 1914.

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FRITZ ITEUEOTH, 0F IBRUCKHAUSEN, HAMBORN, GERMANY.

DECLmATION-RECORDER FOR BORE-HOLES.

reissen.

Specification of Letters Patent.

Patented Feb. 13, 1911"?.

Application mea December 19, 1914. serial no. 878,181.

T0 all 'whom t may concern:

Bc it known that I, Frrrz NnUno'rH, a subject of the Emperorof'Austria-Hungary, and resident of Bruckhausen, Kasinostrasse 2, townof Hamborn, Germany, have invented certain new'and useful improvementsin Declination Recorders for Bore-Holes, of which the following is aspecificati on.

This invention relates to improvements in apparatus 'for measuring thedeclination from the perpendicular, particularly in drilling holes.

Apparatus for determining the extent and the direction ofdeclinationsfrom the perpendicular, are of particular importance in the constructionof shafts. With the steady development of the freezing process forshafts of great depth, it has become highly important to ascertain theposition of the freezing holes, one below the other, with the utmostaccuracy, even very small mistakes. in this direction 'causing at greatdepths serious diiferences in the actual location of the freezing holes.

Accuracy is also of great importance in the subsequent delineation ofthe diiferent soundings and measurements taken, in order to ascertainthe general location of the freezing holes, and on account of thecustomary repeated transfer of the declinations and angles shown by theapparatus, the general and actual declination of the drilling holes willalways be drawn inaccurately.

The apparatus described hereinafter will avoid the calculation andtransfer of the angles and will ascertain in a very simple way, but withthe greatest accuracy, the total declination of the drilling hole. Thesetwo conditions will be carried out by the apparatus of this invention,as it resolves the declination into components at right 4angles to eachother, and the dividing into these components is based on a, system ofaxis which remains unchangeable with respect to the bearings of thecompa'ss.

The invention makes use of well known pendulum devices, having Cardanrings which are provided with two equal levers. At a certain inclinationof the apparatus, these levers of the Cardan rings will swing exactlydeiined amounts in two directions perpendicular to each other, theresultant of 'which corresponds exactly to the amplitude and directionof the hanging of the pendulum compared with the perpendicular. Thispendulum suspension which is provided with the levers is influenced by adirecting force in such a way that the suspension of the pendulum onceadjusted is not rigid with the casing of the apparatus, which may turnupon its vertical axis, but the suspension of the pendulum isindependent of this uncertain rotation and by a suitable directing powerto be described, is always maintained in its initial normal positionwith respect to the compass bearing, during the whole operation oftaking the soundings. The components shown by the levers will. thereforeindicate not only the exact amplitudes but also the actual directions ofthe inclinations of the apparatus with respectv to the invariablecordinate system.

ln the'drawings,

Figure l is a vertical sectional view of the device;

Fig. 2 is ar cross sectional view on the line l111.43 of rig. 1.

The apparatus is equipped with two pendulums 1, which are rigidlyconnected with the inner of the two Cardan rings 2 and 3, and thus willalways hang perpendicular. independent of the position of the apparatus.

To the outside rings 2 are attached arms 4, the free ends of which carryrecording arrangements. The outside rings 2 are placed in the casing 7of the recorder in such a way that they mayswing, and that the recordingarms are only able to move in one direction'with respect to the casing.The two arms aswell as the appertaining rings are arranged in such a waythat the moving directions ofthe recording arms will be perpendicular toeach other. Thus 1n case of an inclination of the-apparatus at least oneof these arms would always deviate from its normal perpendicularposition.

The casing 7 of the recorder, which is held by means of the -iournals 5and 6, will participate in the inclination of the apparatus thus makinga movement relatively to at least one of the writing arms. This movementis used for registering the extent of the inclination, as follows:

Paper straps or tapes stretched between the tension pulleys 8 and 9 andthewinding rollers 10 and 11, are set in movement parallel to thelongitudinal axis of the apparatus, and the writing levers 4, which areprovided with pencils, will make the drawings on the paper. Anyinclination will therefore be resolved into two4 componentsperpendicular to each other and separately recorded.

But considering that the outside casing 12 of the apparatus can rotatemore or less when it is let down suspended on a rope, the recordedcomponents would not necessarily refer to the same cordinate system, butit would be necessary to take into con-Y sideration at times, the angleof rotary distortion upon the longitudinal axis.

' In order to avoid such a complication, it is necessary that theposition of the casing 7, containing the pendulums and the recordingarrangements, shouldremain the same inregard to the distortion duringthe whole performance of the sounding. In the eX- ample shown, this isobtained by a device for reversing the casing 7 in accordance with theamount of rotation of the outside casing 12. This well known reversingdevice is operated byumeans of a gyroscope 2O as follows:

A contact ball 13 is placed with a small' end play between two contactpieces 14 (see Fig. 2) and put in contact with the gyroscope body by aspiral spring,21. In this manner small distortions may of course occurbetween the reversing device and the gyroscope, but the contact ball 13closes an electric circuit by means ofwhich the reversible motor 15 isrotated in the one or the other direction, according as the ball 13touches either the one or the other of the contact pieces 14. Motor 15is fixed within outer casing 12 and its supply circuit includes thecontacts 14. The return movement is equal in amount to the previousturning of the complete soundin apparatus, and is transferred to thecasing of the recorder by means of the bevel gears 16, the shaft 17 andthe spur gears 18 and 19. Thus, by means of the gyroscope and thereversing device, the casing 7 of the recorder will upon rotation of theouter casing, always be returned to its initial position during thewhole time of the sounding work. All declinations from the perpendicularwill thus be recorded by two components, each standing at a right angleto the other, the

direction of which with respect to the bear- `ings of the compass,remains always the same.

The advantage of such an arrangementis obviously very great, as insumming up the dimensions of the individual components, furnishing whendesired a drawing corresponding to the scale of the declinations fromthe same cordinate system, and the Laisseo size and direction of theentire drillinghole is readily determined.

The troublesome transfer of angles will thus be lavoided and' the resultof the extreme simplicity of the drawings will be greater accuracy and aconsiderable saving of time in the recording of results.

1. Apparatus for indicating the declination of bore holes and the like,comprising in combination means for resolving the declination intotwocomponents at right angles to each other, means for separately recordingsaid components, and means for maintaining the resolving means in fixednormal position with respect to compass bearing.

2. Apparatus for indicating the declination of bore holes and the like,comprising in combination means for resolving the declination into twocomponents at right angles toeach other, means for separately recordingsaid components, means adapted to remain'in an assumed normal positionwith respect to compass bearings, and means governed thereby to effect acompensatory move- Nment of the resolving means upon departure of theresolving means from normal position with respect to compass bearing.

3. Apparatus for indicating the declination of bore holes and the like,comprising 4in combination an outer casing, a record member suitablymounted therein, means for marking the declination upon said recordmember, and means for automatically moving said marking meanscircumferentially to compensate for circumferential movement of the saidouter casing.

4. An apparatus for measuring the declination of the perpendicular,particularly in drilling holes, comprising an outer casing, an innerrecord casing independent of said outer casing, a plurality ofpendulums, a plurality of Cardan rings connected with said pendulums anda plurality of recording members connected with said' Cardan rings.

5. An apparatus for measuring the declination of the perpendicular,particularly in drilling` holes, comprising an outer casing, an innerrecord casing mounted on a point bearing, a plurality of pendulums, aplurality of Cardanrings connected with said pendulums, a plurality offingers each carrying a writing member at the outer end thereof and atthe inner end connected to a Cardan ring, a reel of paper for receivingthe markings of said fingers, a motor, a rolling electrical contactautomatically connecting up said motor with the source of power, and atransmitting device connecting said motor and the means for determiningthe declination for maintainingthe determining means in normal positionwith respect to compass bearing.

6. Apparatus for indicating the declination of bore holes and the like,comprising 130 1,215,840 ggg in combination means for resolving the dee-Signed at the Ytown of Cologne, Germany,

lination into two components at right angles this fth day of November1914. to each other, means for separately recording said components, andgyroscopic means FRT NETH 5 for maintaining the resolving means in fixedWitnesses:

normal position with respect to compass J. WYNEM.

bearing.

J. D. ZIEsnoKY,l

